Sealing enclosures against electromagnetic interference

Details Sealing enclosures against electromagnetic interference Sealing enclosures against electromagnetic interference

1989-07-12

1991-03-12

Picard, Leo P.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

174 35R, 219 1055D, H05K 900

Patent

active

049994590

ABSTRACT:
A sealing arrangement for sealing a door or other closure against leakage of EMI (electromagnetic interference) from an enclosure comprises a flexible strip overlying a peripheral portion of the door. The flexible strip is attached to the door along its innermost edge. A magnet strip or the like urges the flexible strip into contact with the enclosure to be sealed. The magnet strip may be mounted on the closure, and trap the flexible strip against the frame, or be mounted upon the frame and pull the flexible strip onto the frame. Protuberances at intervals along the flexible strip provide reliable electrical contact between the flexible strip and the enclosure. The closure need not be a door, supported using hinges, but might be a panel supported solely by adhesion of the magnet strip to the enclosure. A plurality of such panels might be used to clad, and seal, an equipment rack of the open-framework kind. Electrical contact between adjacent panels may be by way of a contact member mounted on the frame, or by direct contact between the panels.

REFERENCES:
patent: 3240862 (1966-03-01), Merkl
patent: 3889043 (1975-06-01), Ducros
patent: 3969572 (1976-07-01), Rostek
patent: 4652695 (1987-03-01), Busby
Bunk, Electromagnetic Shielding, Machine Design, Jul. 6, 1967.

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